Milling machine



Aug. 11, 1942. N. M; MARSILIUS MILLING MACHINE '7 Sheets-Sheet 1 FiledMarch 18, 1940 INVENTOR NEWMAN M MAR'5\L\U5 ATTORNEY Aug. 11 1942- N. M.MARSILIUS MILLING MACHINE Filed March 18, 1940 7 Sheets-Sheet 2 m RNINVENTOR NEWMAN M. MARSILI ATTORNEY Aug. 11, 1 4 N. M. MARSILIUS I2,292,392

MILLING MACHINE Filed March 18, 1940 7 Sheets-Sheet 3 J BY KTTORNEYAug.1 l, N. M. MARSILIUS" 2,292,892

MILLING MACHINE I I Filed March '18, B40 v '7 sheets-sheet 4 INVENTOR INEWMAN M. mmzaluus I ATTORNEY Aug. 11, 1942. 'N. M. MARSILIUS 292,892

MILLING MACHINE Filed March 18, 1940 '7 Sheets-Sheet 5 FIG-12 ATTORNEYAug. 11, 1942 N. M. MARSILIUS MILLING MACHINE Filed March 18, 1940 7SheetsSheet 6 INVENTOR NEWMAN M. MARSILIUS 'ATTORNEY 1942- N. M.MARSILEUS 2,292,892

MILLING MACHINE Filed March 18, 1940 7 Sheets-Sheet '7 FIG. 7

INVENTOR NEWIWAN M MARfiRJU'D ATTORN EY Patented Aug. 11,1942

UNITED STATES PATENT OFFICE MILLING MACHINE NewmanM. Marsilius,Bridgeport, Conn.

Applicati n March 18, 1949, Serial No. 324,655

15 Claims.

This invention relates to new and useful improvements in machine toolsand has particular relation to milling machines.

The objects and advantages of the invention will become apparent from aconsideration of the following detailed description taken in conenection with the accompanying drawings where= in a satisfactoryembodiment of the invention is shown. However, it is to be understoodthat the inventionis not limited to the details disclosed but includesall such variations and modifications as fall within the spirit of theinvention and the scope of the appended claims.

In the drawings:

Fig. l is a side elevational view showing the machine of the invention;

Fig. 2 is a front .elevational View of a portion of the machine;

Fig. 3 is aside elevation, of the upper portion of the machine, the viewbeing taken as looking from the side opposite that shown in Fig. 1;

Fig. 4 is a view partly in rear elevation and partly in section showingthe driving means of the machine, the view being on an, enlarged scale;

Fig. 5 is a sectional view through one portion of the drive means;

Fig. 6 is a longitudinal sectional view through the upper rear portionofthe machine;

Fig. 7 is a similar view through the forward portion of the machine;

Fig; 8 is a horizontal sectional view taken as along the line 8.8 ofFig. '7;

Fig. 9 is a vertical sectional view taken as along plane of the line 9-9of Fig. 7;

Fig. 10 is a detail view partly in elevation and partly in sectionshowing a bracket employed;

Figs, 11, 12 and 13 are elevational views showing cams employed;

Fig. 14 is a side elevational view showing the connection between theindexing cam and the control valve operated thereby;

Figs. 15, 16 and 17 are schematic views showing the cycle of operationof the work indexing and the work holding means the operation of whichis controlled or timed by the cam of Figs. 11 and-1,4.

Referring in detail to drawings the machine includes a cabinet-like basegenerally designated l9 and comprisinga top wall ll about which is anupwardly directed flange l2. Disposed on the top wall II is the bed, ofthe machine generally designated I3 and which on its upper side isprovided with ways 14 receiving the corresponding waysof. a slidegenerally designated IS. The slide is moved back and forth on the bed l3during operation of the machine as will later more fully appear. At itsforward end slide l5. mounts a cutter carrier generally designated l6and the construction and mounting of this I part will later be givenfurther consideration.

upper sides supporting the stationary jaw or' A lower forward portion ofthe bed I3 is provided with ways I receiving the corresponding portionsof a slide generally designated I8. Slide I8 (see Fig. 7) is providedwith a not or threaded bushing [9 into which is threaded an end portionof an adjusting screw 20 having bearing in a lug 2| and having its outerend portion 22 shaped to be -engaged by a wrench or other tool. Withthis arrangement it will be clear that as the screw 2!! is rotated inone dimotion or the other, the slide l8 will be moved along the ways I!toward or from the cutter carrier IS. The collar 23 about the outerportion of the screw 20 may be graduated as shown.

Slide 18 in its upper side is provided with ways 24 arranged at rightangles to the ways I1 and mounted on the slide l8, andguided by andadjustable along the ways 24, is a casting 25 which is in part straddledand enclosed by a casting 26 also supported on the slide l8 andadjustable therewith but not relativ thereto.

On the, upper side of the casting 26 are a pair of parallel rib-likemembers 21 (see Fig. 9) defining between them a channel 28 andon theirblock 29 of a vise means generally designated 3,0. Similarly on theupper side of a portion of the casting 25 and in parallel relation withone another and with the rib-like members 2'1. are rib-like members. 3|defining between them a channel 32 and at their upper sides supportingthe stationary block or jaw 33 of a vise means 34 arranged at the sideof and of the same construction as the vise means 311.

E ch of e v e m ans 3 and 3.4 inc l fi a piston and cylinderconstruction and as such constructions are substantially identical, adetailed disclosure of but one is given. The cylinders of the respectiveconstructions are designated .35 and 36, respectively and the visesinclude movable jaws 31 and 38 respectively. The details of constructionof the piston and cylinder assemblies and of the connections of thepistons with the movable vise jaws will be understood from Fig. 7wherein the mentioned construction of the visa means is disclosed In thecylinder is a piston 39 the rod 40 of which is threaded into a sleeve 4|located within a hollow extension portion 42 of the vise jaw 31. Theseparts are located within the channel 28 provided in the upper side ofthe casting 26 and extend beneath the block stationary vise jaw 29.Sleeve 4| has a head-like portion 43 against one end of the tubularextension 42 and a nut 44 is threaded onto the other end of said sleeveand bears against the rear end of the vise jaw 31. Thus the sleeve 4| isclamped to the movable vise jaw.

The relation of the movable vise jaw to the stationary vise jaw may beadjusted by threading the sleeve 4| more or less onto the threaded endportion of the piston rod 40 and this adjustment will require slackingoff or taking up on the nut 44. To prevent rotation of the piston rodduring the making of such an adjustment a screw or pin 45 is passedthrough a portion of the casting 26 and enters a longitudinallyextending slot 46 in the piston rod. A rod 41 passes through the centerof the sleeve 4| and at one end abuts the inner end of the piston rod 40and at its other end is abutted by a screw 48 which when tightenedforces the rod against the end of the piston rod, exerting a pressure tosomewhat upset the threads between such rod and the sleeve 4| wherebysuch parts are securely connected. against relative movement.

Piston 39 is actuated back and forth to shift the movable vice jaw 31 toand from working clamping relation with the stationary vise jaw 29. Thismay be accomplished by means of fluid under pressure, as for example airunder pressure, introduced into the cylinder as will later more fullyappear through tubes 49 and 50. Actual work engaging blocks may bearranged between the vise jaws and the configuration and size of suchblocks depends upon the shape of the particular work piece.

Cutter carrier I6 includes a plate 52 comprising or including a lug 53passing through the front wall 54 of the slide I5. Through lug 53 isthreaded a screw 55 having bearing in the top wall 56 of the slide I5and having its outer end 51 shaped for engagement by turning tool. Withthis arrangement it will be understood that on turning the screw 55 theplate 52 may be raised and lowered relative to the slide I5 and thecutter carrier being mounted on such plate, the cutter will also beraised and lowered.

On the forward side of the plate 52 is a plate 58 having elongatedopenings 59 therein and through which extend bolts 60 having their heads60a located in vertical slots in the front wall 54 of the slide. Thesebolts thus secure the plate 58 to the plate 52 but owing to the presenceof the slots 59 the former plate may be adjusted laterally on thelatter.

A bearing 6| is secured to plate 58 and supports one end of an arbor orshaft 62 the other end of which is received by a chuck 63 carried by ahead 64. Shaft 62 carries any kind or number of cutters 65 depending onthe work to be performed. Chuck 63 is partly received in a taperedsocket 66 in the outer end of a tubular shaft 61. By means of a bolt 68the chuck is drawn into the socket to grip the shaft 62. On the tubularshaft 61 is a bevel gear 69 meshing with and driven by a bevel gear I0whereby the cutters 65 arerotated. The manner in which the bevel gear I0is driven will later be set forth.

A motor II provides the power for operating the machine and such motoron its shaft carries a pulley I2 over which is trained belts I3 drivinga pulley I4 on a shaft I6. This shaft is mounted in bearings 11 andextends rearwar-dly of the machine into a gear casing 18 normally closedat the rear side of the machine as by a cover I9. Within the gear casingthe shaft carries a gear and a larger gear 8|. On the rear side of thepulley I4 and also on the shaft I6 is a relatively small pulley 82 whichthrough a belt 83 drives a pulley 84 operating the pump 85 forcirculating any or the usual cutting compound or cool-ant.

Mounted to extend through the rear wall of the gear casing I8 are shafts86 and 81 arranged parallel with one another and with the shaft I6 andcarrying gears 88 and 89 meshing with the gears 80 and 8| respectivelyof the shaft I6. All the gears within the casing I8 are change orpick-off gears whereby the speed ratios may be changed as founddesirable.

Also on the shaft 86 is a pulley 90 which through belts 9| drives apulley 92 supported by a bracket 93 secured to the rear corner portionof the machine bed I3 as by bolts 94. Fig. 10

shows this bracket and the mounting of pulley 92 and it is noted thatthe bracket includes bearings 95 for the pulley shaft 96. Shaft 96before the forward most bearing 95 is received in cup-like member 91which is pivotally connected at 98 to a stud 99 fastened by means of apin I00 or otherwise in one end of a sleeve IOI. Said sleeve carrieskeys I02 engaging in splines I03 of a shaft I04, the opposite end ofwhich is attached or fixed to a cup I05 by a pin I96.

A pin I01 pivotally attaches the cup I05 to a second cup I 08 receivingthe outer end of the shaft I09 which mounts the bevel gear I0 locatedwithin the cutter head 64 above referred to. The described constructionprovides a flexible extensible drive shaft between the Pulley 92 and thecutter head 64 and with this construction it will be clear that so longas the pulley 92 is driven the cutters 65 will be rotated and thisregardless of any adjustments of the cutter carrier I6 to which saidcutter head 64 is secured by a pair of bolts 60 as best shown in Fig. 2.

On the rear portion of the shaft 81 above mentioned is a pulley IIO overwhich is trained belts III extending upwardly at the rear of the machineand driving a pulley II2 tumable about a shaft II 3. In connection withthe belts 9| and I II it is noted that the upper wall II of the base I0is provided with openings II4 for the passage of belts. On the shaft H3is a clutch means 5 one element I I6 of which is adapted to be shiftedinto and out of engagement with the other element III thereof on therocking of a yoke II 8 pivotally mounted at 9.

To the lower end of an arm I20 of the yoke II 8 the rear end of a rod|2I is pivotally connected at I22 and such rod extends to the forwardend of the machine where it is provided with a knob or handle I23. Asthis rod is shifted longitudinally the yoke H8 is rocked to engage ordisengage clutch elementsl I6 and I I1. Clutch element II 6 is securedto rotate with the shaft II3. Therefore when such element is beingrotated from the pulley II2 through element II! the shaft I I3 will berotated.

A lug I24 on the yoke I I8 engages with a spring pressed plunger I25carried by the bed portion I26 of the machine. It will be clear that asthe yoke H8 is rocked to snap its lug I24 to one side or the other ofthe plunger I25 the latter will act to retain the yoke in its newposition. However, this holding action of the plunger is easily overcomeon manipulation of the rod I2I.

Brackets I21 on the upper side of the bed I3 toward the rear end thereofsupport a cam shaft I28 extending transversely of the machine in therear of the slide I5. Secured to such cam shaft is a worm gear I29 withwhich meshes a worm I35 on the shaft II3. With this arrangement it willbe clear that when the clutch elements H6 and H1 are engaged the camshaft I28 will be driven.

A cam I3I on said shaft (this cam is shown in Fig. 13) abuts a rollerI32 mounted by a member I33 secured to the slide I5. The securing meansin this instance comprises a screw I34 adapted to be adjusted on theturning of a nut I35 whereby to locate the roller I32 with respect tothe slide. The rear portion of the slide is stepped whereby it has rearwall portions I36, I31 and I38 so that the parts I33, I34 and I35 whileattached to the wall portion I 36 are actually located between otherportions of the slide.

The weight I 39 on which any required additional weights I46 may bedisposed is secured by a chain or other flexible means to the slide atI42. Chain I4I is guided by pulleys or rollers I43 and it will be clearfrom an inspection of Fig. 6 that the weight tends to move the slide Itoward the cam shaft I28 and thus to keep the roller I32 against the camI3'I. Thus it Will be understood that as the cam shaft turns the camacts to move the slide I5 and thus the cutter carrier I6 and the cutters65, toward the work holding vise 30'to have the cutters engage work heldby such vise. As the high point of the cam recedes from the roller theweight I39 imparts return movement to the slide and parts carriedthereby, retracting the cutters.

It will be understood that'the shape of the cam I3I will be varieddepending on the work to be performed and attention is invited to thefact that the cam is in two 'pieces or sections being split along thelines I44 whereby it is easily removable from the shaft I28 forreplacement. In practice the cam is secured in place. by screws I45which pass through openings I46 in the'cam and enter a hub I41permanentlysecured-to. the cam shaft.

Indexing movement of the casting 25 in the ways 24 whereby the visemeans 34 is-moved to- Ward and from the vise means 36 to feed workthereto (as will be described) is controlled by a cam I48 (shown also inFig. 12) on the cam shaft I28. Cam I48 is provided with a groove I49 inwhich islocated a roller I53 secured to the upper end of a bar I5Ihaving rack teeth I52 meshing with the teeth of a pinion I53 on the rearend of a shaft I54 extending longitudinally of the machine.

With this arrangement it will be apparent that as cam I 38 is rotatedthe bar I5I will be raised and lowered or reciprocated vertically andwill impart an oscillating movement to the pinion I53 and thus to theshaft I54. At its forward end, shaft I54 is splined as a I55 andv thissplined portion passes through the hub of a segment I56. Thuswhile thesegment may move along the shaft it is so secured to it that as theshaft is oscillated in the manner above described the segment will begiven similar movement.

Segment I55 meshes with the teeth of a rack bar or slide I51 mounted formovement in directions parallel with the ways 24 and supported in theslide I8 above described as adjustable longitudinally of the machine onturning of the screw 28. Such slide I8 includes a pair of spacedportions I53 and I59 through which the forward end of shaft I54 passesand between which is located the segment I56 on saidshaft.

Rack bar I51 is cut out or provided with recess I60 into which dependspins I6I and I62 carried by the casting 25. A screw I63 carried by therack bar is adjustable relative thereto but as shown in the drawings isin engagement with the pin I6I. With this construction it will be clearthat on the segment I56-being rocked toward the left in Fig. 9the rackbar will be shifted in that direction and will carry the screw I63 withit and the latter engaging the pin I6I the casting 25 will be movedtowardthe left along the ways 24 carrying the vise means 34 away fromthe vise means 30.

The extent of this throw of the vise means is determined by theadjustment of the screw I63 since it will be clear that if in the normalposi-- tion of the parts this screw is spaced from the pin ISI then apart of the throw of the rack bar will be expended in bringing the screwup into engagement with'said pin. A bracket I64 carries an adjustmentscrew I55 which is adjusted in accordance with the adjustment of thescrew I63 so as to be engaged by the casting 25 at the limit of itsmovement whereby there will be no overthrow of the casting but thelatter will be given anexact movement and at the extreme of its movementwill be held between the screws I63 and I65.

The second above mentioned pin designated I62 is shown engaging anadjustable screw I66 threaded into a sleeve I61 which passes through apocket I68 in the rack bar and which has a head I69 bearing against oneend portion of a coil spring I10" located within said pocket.

A pin I61'a prevents turning of the sleeve during adjustment of thescrew I56 therein. On return movement of the segment (that is as it ismoved in a clockwise direction following movement in a counter-clockwisedirection) the screw I56 engages the pin I52 and shifts the rack bartoward the right as viewed in Fig. 9. A hardened lug III on the casting25 is located to engage an' adjustable stop screw I12 at the limit ofthe return movement of casting 25 and vise means 34 and any overthrow inthe segment results only in compression of the spring I18 as the screwI66 is forced against pin I62. In this way return movement of the visemeans 34 to a predetermined position is assured. It is noted that theVise jaws are somewhat wider than the blocks 29 and 33 (see Fig. 9)whereby the bar of stock comprising the work may be fed from the movableto the stationary vise means down to the last small part.

As above suggested the vise means 35 and 34 are both opened and closedby the use of compressed air. The latter is distributed under thecontrol of a valve I13 in turn controlled by a cam I14'(see Figs. 4, l1and 14) secured on the cam shaft I28. The track of this cam in which islocated a roller I15 on the upper end portion of a valve stem I15- is soarranged that the valve stem moves through a cycle involving three positions of which the first and third positions are the same while thesecond and fourth are different. The valve stem I16 is provided withrack teeth I11. meshing with the teeth of a segment I18 on the stem of avalve element I19. With this arrangement the valve element I19 isadvanced through three steps above suggested. It is advanced from thefirst to the second position and then back to the first and then to thefourth.

The arrangement and the timing are such that during a cutting operationboth vise means are closed and gripping or clamping the work and. atsuch time the vise means 34 is spaced from the vise means 30 having beenindexed outwardly from the latter but being closed and gripping the barconstituting the work. When the cutters have finished their work theyare moved rearwardly with the slide I5 and the jaws of the stationaryvise means 30 are opened and the vise means 34 is indexed inwardlytoward the vise means 30 feeding a new piece of work to the latter andpossibly using the new work to force the finished piece out of thestationary vise means. Thereafter the stationary vise means is closed togrip the work and the index vise means is then opened or released fromthe work and moved outwardly to grip the bar of work in a new place.

Cam I14 moves in the direction indicated by the arrow I8! and the cycleof operation of the vise means is illustrated in Figs. 15, 16 and 17wherein Fig. 16 schematically illustrates the position of the valveelement I19 and the conditions of the vise means during the mentionedfirst and third steps of the machines operating cycle. Valve element I19is supplied through its center port I82 with air under pressure and itis adapted to distribute this air through ports I83, I84, I85 and I86.The element is also provided with exhaust ports I81, I88, I89 and I90.These various ports are adapted to register with ports I9I, I92,

I93 and I94 in the casing I95 of the valve.

For the purpose of this description the cutting operation is consideredas the first step in the cycle of the machines operation. Thereforeattention is directed to Fig. 16 wherein it is as sumed that the rollerI15 is in the dwell I80 of the cam groove. In Fig. 16 it will be notedthat owing to the extensions on the ports I81 and I84 the work holdingvise means 30 is closed due to the introduction of air under pressureinto the cylinder 35 through pipe 49 from the port I84, and theexhausting of air from the other end of the cylinder through pipe 50 tothe exhaust port I 81. In addition because of the extensions on theports I86 and I89 air under pressure is now being supplied to theforward side of the piston of cylinder 36 through pipe I91 and exhaustedfrom the outer side thereof through pipe I96. Thus both vise means areclosed or in clamping relation.

Now as the cutting operation is completed roller I 15 is engaged by arise I98 of the cam groove and elevated thereby with the result thatvalve element I19 is rocked to the position of Fig. 17. There, due tothe location of the ports I83 and I90 air is now being supplied to theouter side of piston 39 and exhausted from the inner side thereof sothat the stationary vise means 30 is opened. At this time the movablevise means 34 remains closed gripping the work since the efiectiverelation of the ports I86 and I89 with the pipes I91 and I96 remains thesame. Now the cutters having been moved back from the work the visemeans 34 is indexed inwardly to feed new work to the vise means 30andthis operation takes place while the roller I15 is in the dwell I80aof the cam groove. The piece of work which has been completed may fallonto the chute 200 for removal from the machine.

A new piece of work having been fed to the stationary vice means rollerI15 is engaged by the rise I99 of the cam groove and the valve elementI19 rocked back to the position of Fig. 16. Rise I99 efiects acounter-clockwise movement of the valve element and such movement ofsaid element does not change the supply of compressed air to thecylinder 36 but it does reverse the feed to the cylinder 35 with theresult that the jaws of means are closed to grip the work. This relationat this particular point in the cycle of the machine's operation lastsbut a short time, only while the roller I15 is in the short dwell I80bof the cam groove. In fact the gripping of the work by both vise meansat this time comes about only since it is desirable that the vise means34 maintain a grip on the work until after vise means 30 closes.

Next a rise 20I of the cam groove engages roller I 15 rocking the valveelement I 19 further in a counter-clockwise direction. This moveselement I19 to the position of Fig. 15 from the position of Fig. 16 anddoes not change the efiective relation of the ports I 84 and I81 withthe cylinder 35 so that vise means 30 remains closed. However, it doesresult in port I 85 supplying compressed air to the outer end of thecylinder 36 and in port I88 permitting the exhausting of air from theinner end of said cylinder. Thus vise means 34 is opened. Now as theroller is in dwell I80c of the cam groove the indexing vise means 34 ismoved outwardly to a new position with respect to the work (the throwbeing effected by the rack I51 and its associated parts as above setforth) and the cutters may start back toward the Work.

Thereafter rise 202 engages roller I15 and elevates the same and thevalve stem I16 rocking the valve element I19 back to its first positionas in Fig. 16. There the vise means 30 remains closed and the supply ofcompressed air is so directed that vise means 34 is closed and thus bothsuch means are gripping the work as the roller is back in dwell I andthe cutters 65 are functioning. From this it will be appreciated thatdwells I80 and I80b are the same radial distance from the center of thecam I14.

Having thus set forth the nature of my invention, what I claim is:

1. In a milling machine, a base, work holding and indexing means on saidbase in position to support work to be engaged by a cutter, saidindexing means comprising a pair of vises in sideby-side relation ofwhich one is arranged to hold the work during engagement thereof by thecutter, means mounting the other of said vises for sidewise bodilymovement toward and from the first vise to index the work longitudinallythereto, and means for causing opening and closing of'said vises intimed relation with one another.

2. In a milling machine, a base, work holding and indexing means on saidbase, said work holding and indexing means comprising a stationary meansfor gripping the work during engagement thereof by a cutter and saidindexing means comprising a vise in side-by-side relation with andbodily movabl laterally toward and from said holding means to index thework longitudinally thereto, means for so moving said vise, and meansfor causing opening and closing of said vise and work holding means intimed relation with one another.

3. In a milling machine, a base, work holding means on the base forsupporting work during engagement thereof by a cutter, means for feedingwork to said holding means, said feeding means comprising a vise, meansmounting said vise in side-by-side relation with and for sidewise bodilymovement toward and from said holding means to index work longitudinallythereof, means for so moving said vise, and means for causing openingandclosing ofsaid vise and holding means in timed relation with oneanother.

4. In a milling machine, a base, work holding means on the base forsupporting work during engagement thereof by a cutter, means 'forfeeding Work to said holding means, said feeding means comprising avise, means mounting said .vise for bodily movement toward and from saidholding means, means for so movingsaid vise, means for causing openingand closing of said vise and holding means in timed relation with oneanother, and said means for moving said vise including adjustable meanswhereby the amount of movement or the stroke of the vise andthusthelength of the work fed the holding means maybe varied.

'5. In a milling machine, a base, means for holding .work to be engagedby a cutter, means for feeding work to said holding means, said lastmeans including a vise,.means mounting the vise for bodily movementtoward and from said holding means, a bar, power means for imparting areciprocating movement to said bar, spring means to compensate for overthrow of said power means during return movements of said bar, meansconnecting said bar with said vise for imparting movement to the latter,and means for opening and closing the vise and holding holding work tobe engaged by a cutter, means for feeding work to said holding means,said last means including a vise, means mounting the vise for bodilymovement toward and from said holding means, a bar, a projection on thevise, a. screw on the bar and adjustable relative thereto, means formoving said bar in one direction to have said screw engage saidprojection and force the vise in said direction, means for impartingreturn movement to said vise independently of said screw, and means foropening and closing the vise and holding means in timed relation tooneanother and to such movements of the vise.

7. In a-milling machine, a base, a cam shaft mounted transversely ofsaid 'base at one end thereof, a motor, gear driven from th motor, meansincluding clutch means for driving said cam shaft from said gear,.workholding and indexing means adapted to hold and index work forengagement by a cutter, said workholding and indexing means comprising astationary vise for gripping the work during engagement thereof by acutter and a movable vise bodily shiftable toward and from thestationary vise for indexing the work thereto, a cam on said cam shaft,a rack bar mounted for vertical reciprocating movement, means wherebysuch movement i imparted to said rack bar by said cam, a shaft extendingfrom a position adjacent said cam shaft to a position adjacent saidmovable vise, gear means on said shaft and meshing with said rack barwhereby as the latter is reciprocated the shaft is oscillated, a rackbar having driving connection with said movable vise, gear means on saidshaft and meshing with the second mentioned rack bar whereby as theshaft is oscillated the second rack bar is reciprocated and causesshifting of the movable vise toward and from the stationary vise, andmeans for causing opening and closing of said Vises in timed relationwith one another and with the shifting of the movable vise,

8. In a milling machine, a base, a stationary vise on said base forholding work during engagement thereof by a cutter, a movable vise forfeeding a bar to-the stationary vise, a rack'bar, means -mountingsaidrackbar for movements-in the direction in which said movable vise is-movable, a pair of pins rigid with said movable vise, a pair of screwsmovable with said rack bar and each engageable with one of saiclpinsasthe rack baris moved back and forth whereby the movable vise isshifted back and forth onsuch movement being imparted to the rack bar,said screws adjustable relativeto the rack bar wherebythe extent'ofmovement of the movable vise may be varied and whereby to compensate forwear between the pins and screws without varying the stroke of the rackbar, a shaft, asegment onsaid shaft andmeshing with said rack bar, meansfor oscillating said shaft, and means for causing opening and closing ofsaid Vises in timed relation with one another and with the shifting ofthe movable vise toward and from the stationary vise.

9. In a milling machine, a base, a stationary viseon theibase'forholding work during engageiment thereof by a cutter,a movable vise forfeeding'abar'of work'to the stationary vise, means 'mounting saidmovable vise on the base for movement toward andfrom the stationaryvise, means for so moving said movable vise, said last means including aslide mounted on the base for reciprocating movement in the directionsin which said movable vise is shiftable, means for so movingsaid slide,,a screw carried by said slide and engageable with the movable vise asthe slide is moved in one direction whereby suchmovement of theslideisimparted'to said vise, a second screw 'movable with the slideand.engageable with the said'movable ,vise during return movement of theslide whereby such movement is imparted to said vise, said screws,adjustablerelativeto slide whereby the amountof movement ofsaid movablevise may be .varied without varying the stroke ofthe 'slide, and meansfor causing opening andv closing of said vises in timed relation withoneanother and with movement'of the movable vise toward and'fromthestationary vise.

'10. In a milling machine, a base, a stationary vise on .a base forholding work during engagement thereof bythe cutter, a movable vise forfeeding aQbar of work to the stationary vise,

means mounting said movableviseonthe'base for movement toward and fromthe stationary vise, means for so moving said movable vise, said lastmeans including a slide mounted on the base for reciprocating movementin the directions in which said movable vise is shiftable, means for somoving said slide, a screw carried by said slide and engageable with themovable vise as the slide is moved in one direction whereby suchmovement of the slide is imparted to said vise, a second screw movablewith the slide and engageable with the said movable vise during returnmovement of the slidewhereby such movement is imparted to said vise,said screws adjustable relative to slide whereby the amount of movementof said movable vise may be varied without varying the stroke of theslide, means for causing opening and closing of said Vises in timedrelation with one another and with movement of the movable vise towardand from the stationary vise, adjustable means providing a positive stoplimiting movement of the movable vise in a direction away from thstationary vise, and other adjustable means positively limiting returnmovement of the movable vise toward the stationary vise.

11. In a milling machine, a, base, a stationary vise on the base forholding work during engagement thereof by a cutter, a movable vise forfeeding a bar to the stationary vise, means mounting said movable viseon the base for movement toward and from the stationary vise, means forso moving said movable vise, said last means including adjustable meanswhereby the stroke of the movable vise may be adjusted, and means forcausing opening and closing of said vises in timed relation with oneanother and with movement of the movable vise toward and from thestationary vise.

12. In a milling machine, a base, a stationary vise on the base forholding work during engagement thereof by a cutter, a movable vise forfeeding a bar to the stationary vise, means mounting said movable viseon the base for movement toward and from the stationary vise, means forso moving said movable Vise, each of said vises including a stationaryand a movable jaw to clamp work between them, a piston and cylinderassembly of which the piston is connected with the movable jaw, andmeans for supplying fluid under pressure to said cylinders at therespective sides of the pistons in predetermined timed order for causingopening and closing of said vises in timed relation with one another andwith movement of the movable vise toward and from the stationary vise.

13. In a milling machine, a base, work holding and indexing means onsaid base, said work holding means comprising a stationary means forgripping the work during engagement thereof by a cutter, said indexingmeans comprising a vise in side-by-side relation with and bodily movablelaterally toward and from said holding means to move work longitudinallythereto, means for so moving said vise, said vise including stationaryand movable jaws and a piston and cylinder assembly of which the pistonis connected with the movable jaw, means for supplying fluid underpressure to said cylinder at opposite sides of said piston to causeopening and closing of the jaws in certain timed relation to themovements of the vise, and means for causing opening and closing of theholding means in timed relation with said movement of the vise.

14. In a milling machine, a base, a cam shaft mounted on the base, amotor, a gear driven from the motor, means including intermediate clutchmeans for driving said cam shaft from said gear, work holding andindexing means on said base at the forward end of said slide, said workholding and indexing means comprising a stationary means for grippingthe Work during engagement thereof by the cutter and said indexing meanscomprising a vise bodily movable laterally toward and from said holdingmeans, means for so moving said vise, means for causing opening andclosing of said vise and work holding means in timed relation with oneanother, said last means including piston and cylinder assemblies, meansfor supplying fluid under pressure to the cylinders of said assembliesat opposite sides of the pistons thereof in certain timed order to bringabout such opening and closing of the vise and work holding means, avalve controlling the supply of said fluid under pressure to saidcylinders, and means including a cam on said cam shaft for operatingsaid valve.

15. In a milling machine, a base, a slide on the base, acutter carrieron the slide, a cutter on the carrier, work holding means on the baseforwardly of the slide, a driving shaft extending forwardly of themachine at the side of the slide and at its forward end connected todrive said tool, a pulley connected with the rear end of said shaft, abracket supporting said pulley and said end of the shaft, a cam shaft atthe rear of said slide, a cam on said shaft for moving the slide tocarry the cutter toward said work holding means, a motor in said base, ashaft at the rear of said base and substantiallyin the longitudinalcenter thereof, a pulley on said last shaft, a belt driving said pulleyfrom the motor, a pair of gears on said shaft, a pair of shafts arrangedparallel with the central shaft but located at opposite sides thereof, apick-off gear on each of said pair of shafts, said gears meshing withthe respective gears on the central shaft, a pulley on each shaft ofsaid pair, a belt trained over one of said pulleys and the firstmentioned pulley whereby said motor drives the cutter, a shaft extendingat right angles to and below said cam shaft, a worm and worm geardriving connection between said shaft and the cam shaft, a pulley on theshaft below said camshaft, and a belt trained over the last named pulleyand the pulley on the other of said pair of shafts whereby the motordrives the cam shaft.

NEWMAN M. MARSILIUS.

